The 7:23 from Westport arrived at Grand Central on time, which was itself a kind of miracle, though Calvert Pryce had ceased to marvel at it. He stepped onto the platform with the other gray-flannel men, their fedoras a uniform, their briefcases identical, their faces set in the permanent mask of mild professional discontent that had become the official expression of the Madison Avenue commuter. The tunnel smelled of brake dust and the ghost of a thousand cigars, and he followed the current of bodies toward the main concourse, his shoes making the same sound on the same concrete they had made every weekday morning for the past eleven years.

He was forty-seven years old. He had been forty-seven for so long that he could no longer remember what it felt like to be any other age, though he suspected that was a problem of memory and not of time. Memory, he had learned in his line of work, was a product like any other. You could package it, position it, sell it to the consumer with a new label and a brighter promise. The trick was to make them believe the new version had always been there, waiting to be discovered. This was the fundamental principle of his trade, the engine that kept the accounts profitable and the trains running on time.

At the corner of Vanderbilt and Forty-Second, he stopped for a cup of coffee and a copy of the Times, and he thought about the campaign he was supposed to be writing. The client was a company called Tecton Office Systems, which manufactured a new kind of photocopying machine called the Reproducer Mark II. The machine was remarkable — twenty copies per minute on plain paper, a rate that had seemed impossible even five years earlier, when he was still at Young & Rubicam and the biggest accounts were soap and cigarettes. But the machine had a problem: no one knew why they needed it. The market for office copiers was dominated by a few established players whose machines were slower but whose brand names were household words. Tecton needed a story. They needed a frame that would make the product visible, a narrative that would transform a machine into a necessity.

Calvert had been assigned to find that story. He had been assigned to find it two weeks ago, and he had found nothing. The blank sheet of paper on his desk at Pryce & Partners — his own firm, his own name on the door — remained blank, and the blankness had begun to follow him home. It sat beside him on the train. It sat across from him at dinner. It lay beside him in bed while his wife, Eleanor, breathed the slow, untroubled breath of someone who had never spent a day of her life trying to manufacture desire from nothing.

He found a seat on the uptown express and opened the newspaper. The news was the same news it always was — Korea, McCarthy, the hydrogen bomb — and he folded the paper to the real estate section because that was what he always did, because the ritual of the commute demanded certain gestures, because a man who did not look at the real estate section on the 7:23 might as well admit he had no stake in anything. The house in Westport, the lawn he mowed on Saturdays, the station wagon in the driveway, the two children growing up in a world he was helping to build, one advertisement at a time — these were the coordinates of his life, the fixed points in the coordinate system he had established for himself. Beyond them, the map was blank.

He thought about the story he was supposed to write for Tecton, and he began, as he always began, with a character.

He would call her Margaret. She was a secretary in a midtown law office — young, efficient, the kind of woman who kept her desk organized and her shorthand precise. In the opening scene of the advertisement, Margaret would be drowning. Papers everywhere. The senior partner needed twenty copies of a brief by noon, and the old machine — the competitor's machine — was wheezing its way through the stack at three copies per minute, filling the room with the smell of ammonia and frustration. Margaret, her composure cracking, would look at the clock and know she was going to fail. Then the new machine would be delivered, and everything would change.

Calvert imagined the scene in his head with the precision of a man who had been doing this for twenty-two years: the delivery men in their crisp uniforms, the gleaming new Reproducer Mark II on its wheeled cart, the moment of installation. He imagined Margaret's face as she fed the brief into the machine and watched the copies emerge, clean and fast, twenty per minute, the work of an hour compressed into three. He imagined the senior partner's surprise, the raise, the promotion, the transformation of Margaret from overwhelmed secretary to office hero.

It was a good story. It was a true story, in the sense that it could be true, which was the only sense that mattered in his profession. But it was also a lie, because the story was not about Margaret and not about the machine. The story was about the gap between the life the reader had and the life the reader wanted, and the gap was real enough, but the bridge that the advertisement built across it was made entirely of air.

Calvert closed his eyes and let the rhythm of the train carry him deeper into the narrative. He saw Margaret at her desk, her fingers flying across the typewriter keys, her mind already beginning to construct a fantasy of her own. In that fantasy, Margaret was not a secretary at all. She was a fashion editor at a glossy magazine, standing in a sunlit office with a view of Central Park, directing a photo shoot with the casual authority of someone who had never doubted her place in the world. Her voice was firm, her gestures decisive, her clothes expensive and tasteful. She had become the woman she had always imagined herself becoming, and the transformation had been as easy as turning a page.

And within Margaret's fantasy, the fashion editor — her name was also Margaret, because fantasy is rarely inventive about names — was struggling with a problem of her own. The photographer was late, the model was difficult, the client was unhappy, and the fashion editor was beginning to suspect that the life she had imagined for herself was not as satisfying as the life she had left behind. In a moment of exhaustion, the fashion editor closed her eyes and imagined a simpler life: a desk in a quiet law office, a typewriter that clacked at a steady rhythm, a supervisor who appreciated her efficiency. She imagined herself as a secretary, competent and calm, the reliable center of a well-run office, and in that imagining she found a peace that the real world had never given her.

Calvert opened his eyes. The train was pulling into the 103rd Street station, and he had the strange sensation of having traveled a distance that had nothing to do with geography. The nested stories — his story about Margaret, Margaret's story about the fashion editor, the fashion editor's story about the secretary — had formed a loop, each level imagining a level above or below itself, none of them arriving at any solid ground. It was a fractal: the same pattern repeating at every scale, the same gap between desire and reality, the same machinery of longing running on its endless cycle.

He got off the train and walked the three blocks to his office, a brownstone on East Fifty-Fifth that he had bought at the peak of the postwar boom and was still paying for. The receptionist, a young woman named Doris who reminded him uncomfortably of the Margaret he had imagined, handed him a stack of messages and a cup of coffee that was already cold.

"Mr. Forrester called," she said. "He wants to see the Tecton mockups by Thursday."

Forrester was the account supervisor, a man whose entire existence was calibrated to the rhythm of client expectations. Calvert nodded, took the messages, and walked to his office. He closed the door, sat down at his desk, and stared at the blank sheet of paper that had been waiting for him.

He picked up his pencil and wrote, at the top of the page: Margaret is drowning in paper.

He stared at the sentence. Margaret existed more vividly in his mind than most of the people he would speak to that day. She had a past, a present, a future. She had a problem that the product could solve. She was real in the only way that mattered in his profession: she was believable. The fact that she had never drawn a breath in the actual world was irrelevant — the actual world was not where advertising did its work.

He wrote the next sentence: The clock on the wall said 11:43, and Margaret knew she was running out of time.

The clock on Calvert's own wall said 9:17. He had been in his office for less than ten minutes, and already he had traveled into a world where it was nearly noon and a woman he had invented was running out of time for reasons he had also invented. He wondered, not for the first time, what it meant to live so much of his life inside stories he had made up. He wondered if the real world — the house in Westport, the lawn he mowed on Saturdays, Eleanor's slow breath in the dark — was itself a kind of story, a frame around a frame around a frame, and if so, at what level the frames finally stopped.

Margaret, in the advertisement, was going to discover the Reproducer Mark II and be saved. But Calvert found himself resisting this ending. It was too easy, too clean. A better story, he thought, would have Margaret discover that the machine could copy not only paper but also the emotions of the people who used it. She would feed a letter of resignation into the machine, and the copies would not be words but feelings — the anxiety of the senior partner, the jealousy of the other secretaries, the unspoken loneliness of the office manager who had been passed over for promotion for twelve years. Margaret would realize that every document she copied was a record of someone's hidden life, and she would understand that the office was not a place of work but a theater of desire, a stage on which the same story was performed every day, with the same props and the same lines and the same exhausted curtain calls.

But that was not the advertisement he was supposed to write. The advertisement he was supposed to write was simple: Margaret is drowning; the machine saves her. The client wanted a story with a happy ending, because a story with a happy ending was a story that sold products, and selling products was the only story that mattered.

He pushed the paper aside and walked to the window. Below him, Madison Avenue was filling with the mid-morning traffic of the city that never stopped selling. Trucks with painted logos. Buses with advertisements for soap and cigarettes and breakfast cereal. Pedestrians carrying shopping bags that bore the names of department stores where the salesgirls had been trained to tell a story about every garment on every rack. Every surface was a canvas. Every moment was an opportunity. Every person was a consumer, which was to say, a protagonist in a story that someone else had written.

He thought about the train that morning, the way the nested narratives had multiplied beyond his control. He thought about Margaret, the character he had invented to sell a copying machine, and how Margaret had invented a character of her own, and how that character had invented a character in turn, and how none of them could stop imagining themselves into other lives because that was what human beings did. Desire was the engine of the economy, and the economy was the engine of the nation, and the nation was itself a story that Americans told themselves — a story about freedom and opportunity and the pursuit of happiness — and within that story there were smaller stories, and within those smaller stories there were advertisements, and within the advertisements there were characters who dreamed of other lives, and within those dreams there were other characters who dreamed of other lives still, and the pattern repeated without end.

The telephone rang. It was Forrester, asking about the mockups. Calvert said they were coming along. Forrester said the client was getting nervous. Calvert said the client had nothing to worry about. Forrester said he was holding Calvert to the Thursday deadline. Calvert said Thursday would be fine. The conversation was also a story, of course — a story about competence and reliability and the smooth functioning of the agency — and both men knew their parts by heart.

He hung up and looked at the sentence he had written. Once upon a time, a woman who was not real had a problem that was also not real, and she solved it with a machine that was very real indeed, and everyone lived happily ever after. It was nothing but a frame, and within the frame there was another frame, and within that, another, and Calvert had no idea where the frames ended.

He left the office at noon and walked to a bar on Third Avenue, a dim wood-paneled place where the advertising men from the agencies on Madison gathered to drink and complain. The three-martini lunch was not yet a cliché; it was simply what one did. He ordered a Beefeater martini, straight up with a twist, and sat at the end of the bar watching the others. They were all telling stories — to each other, to themselves, to the bartender who had heard them all before. Stories about accounts won and lost, about clients who were geniuses and clients who were fools, about the girl at the Christmas party and the deal in Palm Springs. Every story was a frame around a frame, a truth wrapped in a truth wrapped in a careful omission. No one told the whole story, because the whole story was never profitable.

Calvert drank his martini and thought about the recursion. He thought about the woman he had invented on the train, and the woman she had invented, and the woman that woman had invented. He thought about the machine that made copies, which was itself a kind of recursion — an original and its reproduction, the copy indistinguishable from the source, each generation identical to the last.

He thought about his own life. He had married Eleanor in 1942, just before shipping out to the Pacific. The story he had told himself then was a war story: he was the young man going off to fight, she was the girl waiting at home, the war would end and they would build a life together. The story had held, more or less, through Iwo Jima and the long voyage home and the baby born in 1946 and the founding of the agency in 1948. But the story had started to feel thin, like an old suit that no longer fit. He was still wearing it, because what else could he do, but he could feel the fabric pulling at the seams.

The bartender asked if he wanted another. He said yes. The second martini arrived, and he drank it faster than the first, and he thought about the advertisement he was supposed to write for Tecton, and he realized that he had already written it. He had written it in his head on the train. He had written the story about Margaret, and the story within that story, and the story within that, and the story was complete. All he had to do was copy it down, reduce it to the version the client would accept, and present it as his own. The machine copies. The man copies. It was all the same operation, repeated at every level of the recursion.

He paid his tab, left the bar, and walked back to the office through the cold November afternoon. The light was failing by four o'clock, the way it always did in November, and the streetlights were coming on along Fifth Avenue. He passed the windows of Saks and Bergdorf Goodman, each display a story in miniature — a woman in an evening gown, a man in a topcoat, a room that had been arranged to suggest a life worth living. Every window was a frame. Every frame contained a world. Every world was for sale.

He sat down at his desk and wrote the advertisement. He wrote it clean and simple, the way the client wanted it: Margaret in the law office, the mountain of paper, the new machine, the happy ending. He wrote it in an hour, and when he was done, he read it through and felt nothing. It was good. It would sell machines. It would make the client happy and the account supervisor happy and the stockholders happy, and it would make the consumers feel, for a moment, that their lives could be as simple as Margaret's, that a machine could solve any problem, that a story could always have a happy ending.

He put the pages in a folder and closed his desk drawer. The clock on the wall said 4:47. He had thirty-eight minutes until the 5:25 to Westport.

In those thirty-eight minutes, he imagined another version of himself. This version did not write the advertisement. This version walked out of the office, past the receptionist who reminded him of Margaret, past the account supervisor who was already thinking about Thursday, past the brownstone he was still paying for, and kept walking until he reached the river. This version stood on the platform at 125th Street and watched the dark water and did not get on the train. This version found a pay phone and dialed the number he knew by heart and told Eleanor that he was not coming home — not tonight, not ever — and that the story they had been telling each other for eleven years was just another advertisement, and he had stopped believing it.

But that version was not the one who existed. The one who existed went to Grand Central, found a seat in the smoking car, and opened the newspaper to the real estate section. The one who existed thought about the lawn that needed mowing and the station wagon that needed new tires and the marriage that had become a routine as dependable as the 7:23 from Westport.

The train moved through the darkening afternoon, past the industrial outskirts and the suburban developments and the bare trees of late November. The houses of Fairfield County flashed by the window, each one a frame around a life, each life a story, each story a product. Calvert watched them pass and thought about the recursion again. He thought about Margaret, and the fashion editor, and the secretary the fashion editor had imagined, and he understood that every one of them was him. Margaret was him aspiring to competence. The fashion editor was him aspiring to glamour. The secretary was him aspiring to peace. He had spent his entire career constructing frames for other people's desires, and he had never noticed that he was building his own prison at the same time.

He understood, as the train pulled into the Westport station and he stood to gather his briefcase and his newspaper and his fedora, that he did not know which level of the recursion was real. He did not know if he was the man imagining the advertisement or the advertisement imagining the man. He did not know if the 7:23 from Westport was the outermost frame or the innermost, if the house on Laurel Lane was the truth or the dream, if Eleanor was waiting for him or if he was waiting for a woman he had invented to fill a role in a story he had written without knowing it.

He stepped off the train and walked across the parking lot to the station wagon. The engine turned over with the familiar hesitation that meant the carburetor needed adjusting, and he pulled out of the lot and drove through the dark streets of the town he had chosen to live in for reasons he could no longer remember. The houses on Laurel Lane were identical in their particulars and different in their details, and he pulled into the driveway of the one that belonged to him, according to the deed and the mortgage and the story he had agreed to tell.

The house was dark. He parked and sat in the car with the engine idling, the headlights illuminating the garage door. He watched the light on the garage door and tried to locate himself in the recursive structure. He was Calvert Pryce, forty-seven years old, advertising executive. He was the man who had written the Tecton advertisement. He was the man who had invented Margaret. He was the man who had imagined the man who walked to the river. He was the man who had been imagined by the man who had been imagined by the man who had been imagined.

He was all of these. He was none of them. The recursion had no bottom. The frames had no end. The only way to break the loop was to stop creating frames, and he had been creating frames for so long that he no longer knew how to see the world without them. The story you were born into was the story you could not see, and Calvert Pryce had been born into the story of the 7:23 from Westport, the story of the gray-flannel suit and the three-martini lunch and the house on the lawn that needed mowing every Saturday, and he would die in that story because he had no other.

He turned off the engine. He opened the car door. He walked up the front steps and put the key in the lock, and he wondered, as he always wondered when he arrived at this particular point in the narrative, what would happen if he simply stopped. If he did not turn the key. If he did not enter the house. If he let the frame remain empty, the narrative unresolved, the recursion unbroken, the story hanging forever on the threshold of its own continuation.

But he turned the key. He entered the house. He called out Eleanor's name. And the story continued as it always did, one frame nested inside another, all the way down to the place where the frames became indistinguishable from the thing they were supposed to contain.